LOANS AND LEASES (Loan And Lease Portfolio, Net Of Unearned Income, By Segment, Class And Internally Assigned Grade) (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Financing Receivable, Recorded Investment [Line Items]
Total	$ 10,219,576	$ 9,712,936
Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	9,913,419	9,366,126
Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Total		978
Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	264,250	316,722
Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	1,171	1,009
Impaired [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	40,736	28,101
Commercial And Industrial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	1,710,497	1,746,486
Commercial And Industrial [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	1,671,522
Commercial And Industrial [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	24,967
Commercial And Industrial [Member] | Impaired [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	14,008
Consumer Mortgages [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	2,447,132	2,257,726
Consumer Mortgages [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	2,369,160	2,167,965
Consumer Mortgages [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	73,753	84,975
Consumer Mortgages [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	107
Consumer Mortgages [Member] | Impaired [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	4,112	4,786
Home Equity [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	573,566	531,374
Home Equity [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	563,119	521,011
Home Equity [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	8,645	9,744
Home Equity [Member] | Impaired [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	1,802	619
Agricultural [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	252,381	239,616
Agricultural [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	243,814	227,688
Agricultural [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	8,235	11,928
Agricultural [Member] | Impaired [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	332
Commercial And Industrial - Owner Occupied [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	1,605,811	1,522,536
Commercial And Industrial - Owner Occupied [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	1,541,771	1,450,158
Commercial And Industrial - Owner Occupied [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	55,289	64,420
Commercial And Industrial - Owner Occupied [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	224	491
Commercial And Industrial - Owner Occupied [Member] | Impaired [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	8,527	7,467
Construction, Acquisition And Development [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	900,875	853,623
Construction, Acquisition And Development [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	870,595	811,227
Construction, Acquisition And Development [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	27,243	39,675
Construction, Acquisition And Development [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	430	334
Construction, Acquisition And Development [Member] | Impaired [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	2,607	2,387
Credit Cards [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	109,576	113,426
Credit Cards [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	109,576	113,426
Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	2,141,398	1,961,977
Commercial Real Estate [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	2,072,229	1,893,514
Commercial Real Estate [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	59,514	57,761
Commercial Real Estate [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	410	184
Commercial Real Estate [Member] | Impaired [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	9,245	10,518
Commercial Real Estate [Member] | Commercial And Industrial [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total		1,709,475
Commercial Real Estate [Member] | Commercial And Industrial [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Total		978
Commercial Real Estate [Member] | Commercial And Industrial [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Total		33,879
Commercial Real Estate [Member] | Commercial And Industrial [Member] | Impaired [Member]
Financing Receivable, Recorded Investment [Line Items]
Total		2,154
All Other [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	478,340	486,172
All Other [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	471,633	471,662
All Other [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	6,604	14,340
All Other [Member] | Impaired [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	$ 103	$ 170